Question33:-The single factor influencing pond productivity to a greater extent is
കന്നട
B:-Hardness
‏قم‎
‎D:-Silicate
‎Correct Answer:- Option-C
Question34:-Stocking density in aquaculture should not be dependent on
‘Ac Water quality
B:-Natural feed availability
C:Farmers management experience
D-Seed availability
Correct Answer:-Question Cancelled
Question35:-In aquaculture ponds high level of C0. is expected during
6.00 AM
B:-11.00 AM
‏۷ی‎
‎۵:300 PM
09۲۷۶١۲ ۸۳۰۸۷9۴۰ ‏۸۸ا05‎
‎Question36:-Least important criteria for selection of suitable fish species for RAS
‘AcFaster growth rate
B:-Hardy and least susceptible to disease
C-Compatibility with other cultivable species of fish
D-High market demand and high price
Correct Answer:- Option-C
Question37:-Gypsum application in aquaculture pond
‘Acincreases pH
B:-Reduces pH
C-Stabilizes the pH
D:-None
Correct Answer:- Option ®
Question38:-Common predatory fish in pond
+۳
B:-Ctenopharyngodan idella
CGlassogobius giurius
D-Sardinella longiceps
Correct Answer:- Option-C
Question39:-Most preferred method for complete eradication of weed fishes before stocking
‘A-Dewatering and desilting
B:-Netting
೦೫0೦ and lines
D:-Poisoning using mahua oil cake
Correct Answer:- Option-D
Question40:-Removal of refractory organics and unpleasant toxic substances in sewage is done during
‘Ac Primary treatment
B:-Secondary treatment
വിവേ treatment
D:-Quaterary treatment
Correct Answer:- Option-C

Question41:-Following is least agreeable to integrated aquaculture ecosystem